Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * drivers/s390/char/keyboard.c |
| 3 | * ebcdic keycode functions for s390 console drivers |
| 4 | * |
| 5 | * S390 version |
| 6 | * Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| 7 | * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), |
| 8 | */ |
| 9 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | #include <linux/module.h> |
| 11 | #include <linux/sched.h> |
| 12 | #include <linux/sysrq.h> |
| 13 | |
| 14 | #include <linux/kbd_kern.h> |
| 15 | #include <linux/kbd_diacr.h> |
| 16 | #include <asm/uaccess.h> |
| 17 | |
| 18 | #include "keyboard.h" |
| 19 | |
| 20 | /* |
| 21 | * Handler Tables. |
| 22 | */ |
| 23 | #define K_HANDLERS\ |
| 24 | k_self, k_fn, k_spec, k_ignore,\ |
| 25 | k_dead, k_ignore, k_ignore, k_ignore,\ |
| 26 | k_ignore, k_ignore, k_ignore, k_ignore,\ |
| 27 | k_ignore, k_ignore, k_ignore, k_ignore |
| 28 | |
| 29 | typedef void (k_handler_fn)(struct kbd_data *, unsigned char); |
| 30 | static k_handler_fn K_HANDLERS; |
| 31 | static k_handler_fn *k_handler[16] = { K_HANDLERS }; |
| 32 | |
| 33 | /* maximum values each key_handler can handle */ |
| 34 | static const int kbd_max_vals[] = { |
| 35 | 255, ARRAY_SIZE(func_table) - 1, NR_FN_HANDLER - 1, 0, |
| 36 | NR_DEAD - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
| 37 | }; |
| 38 | static const int KBD_NR_TYPES = ARRAY_SIZE(kbd_max_vals); |
| 39 | |
| 40 | static unsigned char ret_diacr[NR_DEAD] = { |
| 41 | '`', '\'', '^', '~', '"', ',' |
| 42 | }; |
| 43 | |
| 44 | /* |
| 45 | * Alloc/free of kbd_data structures. |
| 46 | */ |
| 47 | struct kbd_data * |
| 48 | kbd_alloc(void) { |
| 49 | struct kbd_data *kbd; |
| 50 | int i, len; |
| 51 | |
Eric Sesterhenn | 88abaab | 2006-03-24 03:15:31 -0800 | [diff] [blame] | 52 | kbd = kzalloc(sizeof(struct kbd_data), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | if (!kbd) |
| 54 | goto out; |
Eric Sesterhenn | 88abaab | 2006-03-24 03:15:31 -0800 | [diff] [blame] | 55 | kbd->key_maps = kzalloc(sizeof(key_maps), GFP_KERNEL); |
Peter Oberparleiter | da074d0 | 2006-04-10 22:53:44 -0700 | [diff] [blame] | 56 | if (!kbd->key_maps) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | goto out_kbd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) { |
| 59 | if (key_maps[i]) { |
| 60 | kbd->key_maps[i] = |
| 61 | kmalloc(sizeof(u_short)*NR_KEYS, GFP_KERNEL); |
| 62 | if (!kbd->key_maps[i]) |
| 63 | goto out_maps; |
| 64 | memcpy(kbd->key_maps[i], key_maps[i], |
| 65 | sizeof(u_short)*NR_KEYS); |
| 66 | } |
| 67 | } |
Eric Sesterhenn | 88abaab | 2006-03-24 03:15:31 -0800 | [diff] [blame] | 68 | kbd->func_table = kzalloc(sizeof(func_table), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | if (!kbd->func_table) |
| 70 | goto out_maps; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | for (i = 0; i < ARRAY_SIZE(func_table); i++) { |
| 72 | if (func_table[i]) { |
| 73 | len = strlen(func_table[i]) + 1; |
| 74 | kbd->func_table[i] = kmalloc(len, GFP_KERNEL); |
| 75 | if (!kbd->func_table[i]) |
| 76 | goto out_func; |
| 77 | memcpy(kbd->func_table[i], func_table[i], len); |
| 78 | } |
| 79 | } |
| 80 | kbd->fn_handler = |
Eric Sesterhenn | 88abaab | 2006-03-24 03:15:31 -0800 | [diff] [blame] | 81 | kzalloc(sizeof(fn_handler_fn *) * NR_FN_HANDLER, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | if (!kbd->fn_handler) |
| 83 | goto out_func; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | kbd->accent_table = |
| 85 | kmalloc(sizeof(struct kbdiacr)*MAX_DIACR, GFP_KERNEL); |
| 86 | if (!kbd->accent_table) |
| 87 | goto out_fn_handler; |
| 88 | memcpy(kbd->accent_table, accent_table, |
| 89 | sizeof(struct kbdiacr)*MAX_DIACR); |
| 90 | kbd->accent_table_size = accent_table_size; |
| 91 | return kbd; |
| 92 | |
| 93 | out_fn_handler: |
| 94 | kfree(kbd->fn_handler); |
| 95 | out_func: |
| 96 | for (i = 0; i < ARRAY_SIZE(func_table); i++) |
Jesper Juhl | 17fd682 | 2005-11-07 01:01:30 -0800 | [diff] [blame] | 97 | kfree(kbd->func_table[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | kfree(kbd->func_table); |
| 99 | out_maps: |
| 100 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) |
Jesper Juhl | 17fd682 | 2005-11-07 01:01:30 -0800 | [diff] [blame] | 101 | kfree(kbd->key_maps[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | kfree(kbd->key_maps); |
| 103 | out_kbd: |
| 104 | kfree(kbd); |
| 105 | out: |
Heiko Carstens | d2c993d | 2006-07-12 16:41:55 +0200 | [diff] [blame] | 106 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | void |
| 110 | kbd_free(struct kbd_data *kbd) |
| 111 | { |
| 112 | int i; |
| 113 | |
| 114 | kfree(kbd->accent_table); |
| 115 | kfree(kbd->fn_handler); |
| 116 | for (i = 0; i < ARRAY_SIZE(func_table); i++) |
Jesper Juhl | 17fd682 | 2005-11-07 01:01:30 -0800 | [diff] [blame] | 117 | kfree(kbd->func_table[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | kfree(kbd->func_table); |
| 119 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) |
Jesper Juhl | 17fd682 | 2005-11-07 01:01:30 -0800 | [diff] [blame] | 120 | kfree(kbd->key_maps[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | kfree(kbd->key_maps); |
| 122 | kfree(kbd); |
| 123 | } |
| 124 | |
| 125 | /* |
| 126 | * Generate ascii -> ebcdic translation table from kbd_data. |
| 127 | */ |
| 128 | void |
| 129 | kbd_ascebc(struct kbd_data *kbd, unsigned char *ascebc) |
| 130 | { |
| 131 | unsigned short *keymap, keysym; |
| 132 | int i, j, k; |
| 133 | |
| 134 | memset(ascebc, 0x40, 256); |
| 135 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) { |
| 136 | keymap = kbd->key_maps[i]; |
| 137 | if (!keymap) |
| 138 | continue; |
| 139 | for (j = 0; j < NR_KEYS; j++) { |
| 140 | k = ((i & 1) << 7) + j; |
| 141 | keysym = keymap[j]; |
| 142 | if (KTYP(keysym) == (KT_LATIN | 0xf0) || |
| 143 | KTYP(keysym) == (KT_LETTER | 0xf0)) |
| 144 | ascebc[KVAL(keysym)] = k; |
| 145 | else if (KTYP(keysym) == (KT_DEAD | 0xf0)) |
| 146 | ascebc[ret_diacr[KVAL(keysym)]] = k; |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Generate ebcdic -> ascii translation table from kbd_data. |
| 153 | */ |
| 154 | void |
| 155 | kbd_ebcasc(struct kbd_data *kbd, unsigned char *ebcasc) |
| 156 | { |
| 157 | unsigned short *keymap, keysym; |
| 158 | int i, j, k; |
| 159 | |
| 160 | memset(ebcasc, ' ', 256); |
| 161 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) { |
| 162 | keymap = kbd->key_maps[i]; |
| 163 | if (!keymap) |
| 164 | continue; |
| 165 | for (j = 0; j < NR_KEYS; j++) { |
| 166 | keysym = keymap[j]; |
| 167 | k = ((i & 1) << 7) + j; |
| 168 | if (KTYP(keysym) == (KT_LATIN | 0xf0) || |
| 169 | KTYP(keysym) == (KT_LETTER | 0xf0)) |
| 170 | ebcasc[k] = KVAL(keysym); |
| 171 | else if (KTYP(keysym) == (KT_DEAD | 0xf0)) |
| 172 | ebcasc[k] = ret_diacr[KVAL(keysym)]; |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * We have a combining character DIACR here, followed by the character CH. |
| 179 | * If the combination occurs in the table, return the corresponding value. |
| 180 | * Otherwise, if CH is a space or equals DIACR, return DIACR. |
| 181 | * Otherwise, conclude that DIACR was not combining after all, |
| 182 | * queue it and return CH. |
| 183 | */ |
| 184 | static unsigned char |
| 185 | handle_diacr(struct kbd_data *kbd, unsigned char ch) |
| 186 | { |
| 187 | int i, d; |
| 188 | |
| 189 | d = kbd->diacr; |
| 190 | kbd->diacr = 0; |
| 191 | |
| 192 | for (i = 0; i < kbd->accent_table_size; i++) { |
| 193 | if (kbd->accent_table[i].diacr == d && |
| 194 | kbd->accent_table[i].base == ch) |
| 195 | return kbd->accent_table[i].result; |
| 196 | } |
| 197 | |
| 198 | if (ch == ' ' || ch == d) |
| 199 | return d; |
| 200 | |
| 201 | kbd_put_queue(kbd->tty, d); |
| 202 | return ch; |
| 203 | } |
| 204 | |
| 205 | /* |
| 206 | * Handle dead key. |
| 207 | */ |
| 208 | static void |
| 209 | k_dead(struct kbd_data *kbd, unsigned char value) |
| 210 | { |
| 211 | value = ret_diacr[value]; |
| 212 | kbd->diacr = (kbd->diacr ? handle_diacr(kbd, value) : value); |
| 213 | } |
| 214 | |
| 215 | /* |
| 216 | * Normal character handler. |
| 217 | */ |
| 218 | static void |
| 219 | k_self(struct kbd_data *kbd, unsigned char value) |
| 220 | { |
| 221 | if (kbd->diacr) |
| 222 | value = handle_diacr(kbd, value); |
| 223 | kbd_put_queue(kbd->tty, value); |
| 224 | } |
| 225 | |
| 226 | /* |
| 227 | * Special key handlers |
| 228 | */ |
| 229 | static void |
| 230 | k_ignore(struct kbd_data *kbd, unsigned char value) |
| 231 | { |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * Function key handler. |
| 236 | */ |
| 237 | static void |
| 238 | k_fn(struct kbd_data *kbd, unsigned char value) |
| 239 | { |
| 240 | if (kbd->func_table[value]) |
| 241 | kbd_puts_queue(kbd->tty, kbd->func_table[value]); |
| 242 | } |
| 243 | |
| 244 | static void |
| 245 | k_spec(struct kbd_data *kbd, unsigned char value) |
| 246 | { |
| 247 | if (value >= NR_FN_HANDLER) |
| 248 | return; |
| 249 | if (kbd->fn_handler[value]) |
| 250 | kbd->fn_handler[value](kbd); |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * Put utf8 character to tty flip buffer. |
| 255 | * UTF-8 is defined for words of up to 31 bits, |
| 256 | * but we need only 16 bits here |
| 257 | */ |
| 258 | static void |
| 259 | to_utf8(struct tty_struct *tty, ushort c) |
| 260 | { |
| 261 | if (c < 0x80) |
| 262 | /* 0******* */ |
| 263 | kbd_put_queue(tty, c); |
| 264 | else if (c < 0x800) { |
| 265 | /* 110***** 10****** */ |
| 266 | kbd_put_queue(tty, 0xc0 | (c >> 6)); |
| 267 | kbd_put_queue(tty, 0x80 | (c & 0x3f)); |
| 268 | } else { |
| 269 | /* 1110**** 10****** 10****** */ |
| 270 | kbd_put_queue(tty, 0xe0 | (c >> 12)); |
| 271 | kbd_put_queue(tty, 0x80 | ((c >> 6) & 0x3f)); |
| 272 | kbd_put_queue(tty, 0x80 | (c & 0x3f)); |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | * Process keycode. |
| 278 | */ |
| 279 | void |
| 280 | kbd_keycode(struct kbd_data *kbd, unsigned int keycode) |
| 281 | { |
| 282 | unsigned short keysym; |
| 283 | unsigned char type, value; |
| 284 | |
| 285 | if (!kbd || !kbd->tty) |
| 286 | return; |
| 287 | |
| 288 | if (keycode >= 384) |
| 289 | keysym = kbd->key_maps[5][keycode - 384]; |
| 290 | else if (keycode >= 256) |
| 291 | keysym = kbd->key_maps[4][keycode - 256]; |
| 292 | else if (keycode >= 128) |
| 293 | keysym = kbd->key_maps[1][keycode - 128]; |
| 294 | else |
| 295 | keysym = kbd->key_maps[0][keycode]; |
| 296 | |
| 297 | type = KTYP(keysym); |
| 298 | if (type >= 0xf0) { |
| 299 | type -= 0xf0; |
| 300 | if (type == KT_LETTER) |
| 301 | type = KT_LATIN; |
| 302 | value = KVAL(keysym); |
| 303 | #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */ |
| 304 | if (kbd->sysrq) { |
| 305 | if (kbd->sysrq == K(KT_LATIN, '-')) { |
| 306 | kbd->sysrq = 0; |
Heiko Carstens | 5a489b9 | 2006-10-06 16:38:35 +0200 | [diff] [blame^] | 307 | handle_sysrq(value, kbd->tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | return; |
| 309 | } |
| 310 | if (value == '-') { |
| 311 | kbd->sysrq = K(KT_LATIN, '-'); |
| 312 | return; |
| 313 | } |
| 314 | /* Incomplete sysrq sequence. */ |
| 315 | (*k_handler[KTYP(kbd->sysrq)])(kbd, KVAL(kbd->sysrq)); |
| 316 | kbd->sysrq = 0; |
| 317 | } else if ((type == KT_LATIN && value == '^') || |
| 318 | (type == KT_DEAD && ret_diacr[value] == '^')) { |
| 319 | kbd->sysrq = K(type, value); |
| 320 | return; |
| 321 | } |
| 322 | #endif |
| 323 | (*k_handler[type])(kbd, value); |
| 324 | } else |
| 325 | to_utf8(kbd->tty, keysym); |
| 326 | } |
| 327 | |
| 328 | /* |
| 329 | * Ioctl stuff. |
| 330 | */ |
| 331 | static int |
| 332 | do_kdsk_ioctl(struct kbd_data *kbd, struct kbentry __user *user_kbe, |
| 333 | int cmd, int perm) |
| 334 | { |
| 335 | struct kbentry tmp; |
| 336 | ushort *key_map, val, ov; |
| 337 | |
| 338 | if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry))) |
| 339 | return -EFAULT; |
| 340 | #if NR_KEYS < 256 |
| 341 | if (tmp.kb_index >= NR_KEYS) |
| 342 | return -EINVAL; |
| 343 | #endif |
| 344 | #if MAX_NR_KEYMAPS < 256 |
| 345 | if (tmp.kb_table >= MAX_NR_KEYMAPS) |
| 346 | return -EINVAL; |
| 347 | #endif |
| 348 | |
| 349 | switch (cmd) { |
| 350 | case KDGKBENT: |
| 351 | key_map = kbd->key_maps[tmp.kb_table]; |
| 352 | if (key_map) { |
| 353 | val = U(key_map[tmp.kb_index]); |
| 354 | if (KTYP(val) >= KBD_NR_TYPES) |
| 355 | val = K_HOLE; |
| 356 | } else |
| 357 | val = (tmp.kb_index ? K_HOLE : K_NOSUCHMAP); |
| 358 | return put_user(val, &user_kbe->kb_value); |
| 359 | case KDSKBENT: |
| 360 | if (!perm) |
| 361 | return -EPERM; |
| 362 | if (!tmp.kb_index && tmp.kb_value == K_NOSUCHMAP) { |
| 363 | /* disallocate map */ |
| 364 | key_map = kbd->key_maps[tmp.kb_table]; |
| 365 | if (key_map) { |
Heiko Carstens | d2c993d | 2006-07-12 16:41:55 +0200 | [diff] [blame] | 366 | kbd->key_maps[tmp.kb_table] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | kfree(key_map); |
| 368 | } |
| 369 | break; |
| 370 | } |
| 371 | |
| 372 | if (KTYP(tmp.kb_value) >= KBD_NR_TYPES) |
| 373 | return -EINVAL; |
| 374 | if (KVAL(tmp.kb_value) > kbd_max_vals[KTYP(tmp.kb_value)]) |
| 375 | return -EINVAL; |
| 376 | |
| 377 | if (!(key_map = kbd->key_maps[tmp.kb_table])) { |
| 378 | int j; |
| 379 | |
| 380 | key_map = (ushort *) kmalloc(sizeof(plain_map), |
| 381 | GFP_KERNEL); |
| 382 | if (!key_map) |
| 383 | return -ENOMEM; |
| 384 | kbd->key_maps[tmp.kb_table] = key_map; |
| 385 | for (j = 0; j < NR_KEYS; j++) |
| 386 | key_map[j] = U(K_HOLE); |
| 387 | } |
| 388 | ov = U(key_map[tmp.kb_index]); |
| 389 | if (tmp.kb_value == ov) |
| 390 | break; /* nothing to do */ |
| 391 | /* |
| 392 | * Attention Key. |
| 393 | */ |
| 394 | if (((ov == K_SAK) || (tmp.kb_value == K_SAK)) && |
| 395 | !capable(CAP_SYS_ADMIN)) |
| 396 | return -EPERM; |
| 397 | key_map[tmp.kb_index] = U(tmp.kb_value); |
| 398 | break; |
| 399 | } |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | static int |
| 404 | do_kdgkb_ioctl(struct kbd_data *kbd, struct kbsentry __user *u_kbs, |
| 405 | int cmd, int perm) |
| 406 | { |
| 407 | unsigned char kb_func; |
| 408 | char *p; |
| 409 | int len; |
| 410 | |
| 411 | /* Get u_kbs->kb_func. */ |
| 412 | if (get_user(kb_func, &u_kbs->kb_func)) |
| 413 | return -EFAULT; |
| 414 | #if MAX_NR_FUNC < 256 |
| 415 | if (kb_func >= MAX_NR_FUNC) |
| 416 | return -EINVAL; |
| 417 | #endif |
| 418 | |
| 419 | switch (cmd) { |
| 420 | case KDGKBSENT: |
| 421 | p = kbd->func_table[kb_func]; |
| 422 | if (p) { |
| 423 | len = strlen(p); |
| 424 | if (len >= sizeof(u_kbs->kb_string)) |
| 425 | len = sizeof(u_kbs->kb_string) - 1; |
| 426 | if (copy_to_user(u_kbs->kb_string, p, len)) |
| 427 | return -EFAULT; |
| 428 | } else |
| 429 | len = 0; |
| 430 | if (put_user('\0', u_kbs->kb_string + len)) |
| 431 | return -EFAULT; |
| 432 | break; |
| 433 | case KDSKBSENT: |
| 434 | if (!perm) |
| 435 | return -EPERM; |
| 436 | len = strnlen_user(u_kbs->kb_string, |
| 437 | sizeof(u_kbs->kb_string) - 1); |
Davi Arnaut | 172411f | 2006-02-01 03:06:40 -0800 | [diff] [blame] | 438 | if (!len) |
| 439 | return -EFAULT; |
| 440 | if (len > sizeof(u_kbs->kb_string) - 1) |
| 441 | return -EINVAL; |
| 442 | p = kmalloc(len + 1, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | if (!p) |
| 444 | return -ENOMEM; |
| 445 | if (copy_from_user(p, u_kbs->kb_string, len)) { |
| 446 | kfree(p); |
| 447 | return -EFAULT; |
| 448 | } |
| 449 | p[len] = 0; |
Jesper Juhl | 17fd682 | 2005-11-07 01:01:30 -0800 | [diff] [blame] | 450 | kfree(kbd->func_table[kb_func]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | kbd->func_table[kb_func] = p; |
| 452 | break; |
| 453 | } |
| 454 | return 0; |
| 455 | } |
| 456 | |
| 457 | int |
| 458 | kbd_ioctl(struct kbd_data *kbd, struct file *file, |
| 459 | unsigned int cmd, unsigned long arg) |
| 460 | { |
| 461 | struct kbdiacrs __user *a; |
| 462 | void __user *argp; |
| 463 | int ct, perm; |
| 464 | |
| 465 | argp = (void __user *)arg; |
| 466 | |
| 467 | /* |
| 468 | * To have permissions to do most of the vt ioctls, we either have |
| 469 | * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG. |
| 470 | */ |
| 471 | perm = current->signal->tty == kbd->tty || capable(CAP_SYS_TTY_CONFIG); |
| 472 | switch (cmd) { |
| 473 | case KDGKBTYPE: |
| 474 | return put_user(KB_101, (char __user *)argp); |
| 475 | case KDGKBENT: |
| 476 | case KDSKBENT: |
| 477 | return do_kdsk_ioctl(kbd, argp, cmd, perm); |
| 478 | case KDGKBSENT: |
| 479 | case KDSKBSENT: |
| 480 | return do_kdgkb_ioctl(kbd, argp, cmd, perm); |
| 481 | case KDGKBDIACR: |
| 482 | a = argp; |
| 483 | |
| 484 | if (put_user(kbd->accent_table_size, &a->kb_cnt)) |
| 485 | return -EFAULT; |
| 486 | ct = kbd->accent_table_size; |
| 487 | if (copy_to_user(a->kbdiacr, kbd->accent_table, |
| 488 | ct * sizeof(struct kbdiacr))) |
| 489 | return -EFAULT; |
| 490 | return 0; |
| 491 | case KDSKBDIACR: |
| 492 | a = argp; |
| 493 | if (!perm) |
| 494 | return -EPERM; |
| 495 | if (get_user(ct, &a->kb_cnt)) |
| 496 | return -EFAULT; |
| 497 | if (ct >= MAX_DIACR) |
| 498 | return -EINVAL; |
| 499 | kbd->accent_table_size = ct; |
| 500 | if (copy_from_user(kbd->accent_table, a->kbdiacr, |
| 501 | ct * sizeof(struct kbdiacr))) |
| 502 | return -EFAULT; |
| 503 | return 0; |
| 504 | default: |
| 505 | return -ENOIOCTLCMD; |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | EXPORT_SYMBOL(kbd_ioctl); |
| 510 | EXPORT_SYMBOL(kbd_ascebc); |
| 511 | EXPORT_SYMBOL(kbd_free); |
| 512 | EXPORT_SYMBOL(kbd_alloc); |
| 513 | EXPORT_SYMBOL(kbd_keycode); |